# Charm configuration options reference This reference section provides the sites where you can find the configuration options for the `k8s` and `k8s-worker` charms. These options can be set at various points during the charm's lifecycle. Some options are limited to the bootstrap process, while others can be modified at any time. Options restricted to bootstrap are explicitly noted in their descriptions and prefixed with `bootstrap-`. ## Configuration options for `k8s` charm The configuration options for the `k8s` charm are available on the Charmhub configurations [page][k8s charmhub configurations]. ## Configuration options for `k8s-worker` charm The configuration options for the `k8s-worker` charm are available on the Charmhub configurations [page][k8s-worker charmhub configurations]. [k8s charmhub configurations]: https://charmhub.io/k8s/configurations [k8s-worker charmhub configurations]: https://charmhub.io/k8s-worker/configurations